Car-brake.



No; 636,672. Patenfed Nov. 7, I899. P. s. KINGSLAND.

CAR BRAKE.

(Application filed. Oct. 27, 1897. Renewed Apr. 8, 1899.)

2 Sheets-Sheet L (No Model.)

Eva-:12 111 m: Nor-ms PETERS co, PHOTO LITNCL, WASHYNGTON, a. c.

No. 636,672. Patented Nov. 7,1899. P. S. KINGSLAND.

GAR BRAKE.

(Application filed Oct. 27, 1897. Renewed Apr. 8, 1899.)

2 Sheets-Sheet z,

(No Model.)

UNITED STATES PATENT OFFICE.

PHILIP S. KINGSLAND, OF ST. LOUIS, MISSOURI.

CAR-BRAKE.

SPEGIFICATIOIV forming part of Letters Patent No. 636,672, dated November '7, 1899.

Application filed October 27, 1897. Renewed April 8, 1899. Serial No. 712,323. (No model.) 7

T allwhom it may concern.-

Be it known that I, PHILIP S. KINGSLAND, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Oar-Brakes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

The object of my invention is to provide a brake, especially adapted for use on streetcars, which combines the ordinary brakeshoes acting on the car-wheels with an auxiliary brake adapted-to be applied to the axle or to a flange upon the Wheel. It also provides a means for operating these brakes from either end of the car, as is necessary when the termini of the line have no loops and the car has to return without being reversed.

The invention contains features of novelty hereinafter specifically pointed out and claimed.

Referring to the drawings, Figure I shows a top or plan View of the truck and wheels and a portion of the platform of a car, the same being provided with my improvement. Fig. II shows a side elevation of the truck. Fig. III shows a side elevation of the inner side of a Wheel and portion of the brake-operating mechanism, being on line III III, Fig. I, looking in the direction of the arrow. Fig. IV is a section taken on line IV IV, Fig. III. Fig. V is a side view of the lever-arm used to operate the device and a portion of the platform. Fig. V1 is a detail top view of the rockshaft located at the central part of the car.

1 is a frame to which the car-body is attached. 2 is the axle of the main pair of wheels 3, and 4 is the truck-frame. These parts and the means of attaching the same are of the usual construction, except as will be indicated hereinafter.

5 is the end of the platform, to which is secured a quadrant 6, on which is pivoted a lever 7, to whose downward ly-extending end is attached the chain 8. The upper end of the lever 7 is provided with a socket 9, into which the removable handle. 10is adapted to fit.

11 is a dog-attached to the lever 7 to hold the same to any desired position on the quadrant 6 by engaging in notches therein. The

dog is operated by a lug 12, controlled by a latch 13, attached to and removable with the handle 10. The chain 8 is shown as passing around a wheel 14, so as to turn the same at right angles to the line of swinging the lever. If the lever were placed in the center of the platform and arranged to swing in line with the car-body, this wheel 14 would be unnecessary.

Carried on the front of the frame 1 are over= hanging brackets 15, which support a rockshaft 16. This rock-shaft 16 has firmly secured thereto threecams 17, 18, and 19. The chain 8 is attached to the central cam 17. To the other two cams 18 and 19 are attached chains 20 and 21, whose other ends are connected to segmental collars 22, fitting loosely on rings 23, on which they are held by bands 23% (See Fig. IV.) The collars 22 have openings to receive movable radial blocks 24, over which the chains 20 and 21 pass and which bear against the rings 23. These rings 23 I have shown as secured directly to the carwheels 3 by means of bolts 25. They may, however, be cast thereon or be secured indirectly thereto by being connected to the axle 2. The collars 22 may be complete circles, or they may, as I have shown them, be each a segment of a circle, in which case they should extend more than half-way around the rings, so as not to drop out. They must be of sufficient strength or rigidity to maintain their curved shape when force is exerted to apply the brake.

Carried on the front of the truck-frame 4 are hangers 26.

represents bars having bolts 28 on their ends by which they are secured to the hang ers 26.

29 are springs located between the hangers and the bars 30. The bars 30 are pivotally secured at 31 to ears 32 on the movable collars 22. The pivot-points 31 are below a linedrawn from the axle 2 to the springs 29.

27 are brake-shoes attached .to the bars 30 by bolts 30.

Through their connection with the hangers the collars 22 are prevented from moving all the way around the rings 23. When the chains 20 and 21 are drawn upward by the cams 18 and 19, the collars 22 are drawn around on the rings, the bars 30 and cars 32 have a toggle action, pressing the shoes 27 against the wheels, and at the same time the blocks 24 are pressed inwardly by the chains against the rings 23. The stronger the pull on the chain 8 the tighter are the two braking media, the shoes 27 and the blocks 24L being pressed against the wheels and rings, respectively.

Secured to the rock-shaft 16, approximately at its center, is a double crank From the opposite ends of this crank chains 3% and 35 lead to opposite ends of a lever 33 on a rockshaft 16, by which it is secured to the tim bers of the car-body. The ear is furnished with a truck and appliances at each end similar to those shown in the drawings, excepting that the relative positions of the parts are reversed, and the lever 33' is connected in like manner by means of chains 3% and 35 to the appliance at the other end of the car.

When the car reaches its terminus, the brakes are set by means of the handle 10 and lever 7, so that it cannot move if it happens to be on an incline. The handle 10 is then lifted out of its socket 9, leaving the lever 7 secured in place by means of the dog 11 looking into the quadrant 6. The handle 10 is then dropped into the socket at the other end of the car. While this is being done the brakes are kept set by the dog 11. hen the adjustment is made, so that the brakes are controlled from the other end of the car, the conductor puts his foot on the dog 11, disengages it from the quadrant, and the device is again under the control of the motorman.

It is evident that any desired number of blocks 24 may be used, and it is also evident that if it is desired to use the collars alone in some instances the blocks 24 might be removed and the chains 20 and 21 bear directly against the periphery of the collars 22. It is likewise evident that in case it should in some instances be desirable to dispense with the brake-shoes this will be done by removing the bolts 30, that connect the brake-shoes to the bars 30, and then the brakes, consisting of the collars 22, blocks 24, and rings 23, may be used alone.

A brake constructed in accordance with my invention is exceedingly powerful, is simple in its operation, and not liable to get out of order.

In the claims where it is stated that the ring is carried by the car-wheels it is meant that the rings are connected to the wheels either directly or indirectly, as stated in the specification.

I claim as my invention- 1. In a car-brake, the combination of a ring carried by the carwl1eels, a collar on the ring, blocks fitting in openings formed in the collar and adapted to bear against said ring, means for checking the movement of the collar on the ring, a chain secured by one end to the collar and passing over said blocks, and mechanism to which the other end of the chain is connected and by which it is tightened, substantially as set forth.

2. In a car-brake, the combination of a ring carried by the car-wheels, a collar on the ring, blocks fitting in openings formed in the collar and adapted to bear against said ring, means for checking the movement of the collar on the ring, a chain secured by one end to the collar and passing over said blocks, and mechanism to which the other end of the chain is connected and by which it is moved, substantially as set forth.

3. In a car-brake, the combination of a ring carried by the car-wheels, a collar 011 the ring, blocks fitting in openings formedin the collar and adapted to bear against said ring, a brake-shoe, connection between the brakeshoe and said collar, whereby the former is moved by the latter, the chain passing over the blocks, and means connected with the chain for turning said collar, whereby said blocks are pressed against said ring and whereby said shoe is pressed against the carwheel, substantially as set forth.

4:. In a car-brake, the combination of a ring carried by the car-wheels, a collar on the ring, blocks fitting in openings formed in the collar and adapted to bear against said ring, a brake-shoe, a toggle connection between said brake-shoe and said collar the chain passing over the blocks, and means connected with the chain for moving said collar, whereby said blocks are pressed against said ring and whereby said shoe is pressed against the carwheel, substantially as set forth.

5. In acar-brake, the combination of a ring carried by the car-wheels, a collar on the ring, a brake-shoe, a toggle connection between said collar and said shoe, the chain passing over the collar and means connected with the chain for turning said collar; whereby when said collar is turned the collar is pressed upon the ring and the brake-shoe is pressed against the car-wheel, substantially as set forth.

6. In a car-brake, the combination of a ring carried by the car-wheels, a collar on the ring, blocks fitting in openings formed in the collar and adapted to bear against said ring, a brake-shoe, a toggle connection between said collar and brake-shoe, a chain secured at one end to said collar and which passes over said blocks, and means for moving the chain; whereby when the chain is moved the blocks are pressed against said ring and the brakeshoe pressed against the car-wheel, substantially as set forth.

7. In a car-brake, the combination of a ring carried by the car-wheels, a collar surrounding the periphery of the ring, blocks fitting in openings formed in the collar and adapted to bear at their inner ends against said ring, and mechanism for pressing said blocks against said ring, substantially as set forth.

8. In a car-brake, the combination of a ring carried by the car-wheels, a collar fitting on the ring, blocks fitting in openings in the collar and adapted to bear against said ring, a chain secured at one end to said collar and which bears against said blocks, a rock-shaft, a cam on the rock-shaft to which the other end of said chain is secured, and means for rocking the shaft, substantially as set forth.

9. In a car-brake, the combination of a ring carried by the car-wheels, a collar on the ring, blocks fitting in openings formed in the collar and adapted to bear against said ring, a brake-shoe, the chain passing over the blocks, a hanger to which the brake-shoe is connected, a toggle connection between said shoe and said collar; and means connected with the chain whereby said blocks are pressed against said ring and said shoe forced against the carwheel, substantially as set forth.

10. In a car-brake, the combination of a ring carried by the car-wheel, a collar on the ring, blocks fitting in openings formed in the collar and adapted to bear against said ring, means for checking the movement of the collar, a chain connected by one end to the collar and which bears against said blocks, a rock-shaft, a cam on the rock-shaft to which the other end of said chain is connected, a second cam on said rock-shaft to which one end of a second chain is connected and a lever to which the other end of the last-mentioned chain is connected, substantially as set forth.

11. In a car-brake, the combination of a ring carried by the car-wheels, a collar fitting on said ring, blocks fitting in openings formed in the collar and which are adapted to bear against said ring, a chain secured by one end to said collar and which bears against said blocks, a lever, a connection between said chain and lever, and a handle removably connected to said lever, substantially as and for the purpose set forth.

PHILIP S. KINGSLAND.

In presence 0f- E. S. KNIGHT, STANLEY STONER. 

